Mold coating apparatus



MOLD COATING APPARATUS Filed July l2, 1937 Cfiarlexs' Eamitk ATTORNEYSWITNESS Patented- Jan. 24, 1939 UNITED STATES PATENT o1=1=1cE 2 Claims.

This invention relates to an appartus for producing carbon for coatingmolds, or what is commonly called a mold smoker, and its general objectis to provide an apparatus that produces carbon from oil, by burning thelatter and which directs the carbonized gases in the form of smoke tothe molds for the carbon to adhere thereto.

A further object is to provide an apparatus for coating molds, thatiscapable of producing a maximum amount of carbon from a minimum amount ofoil and fuel consumption, and also a quality of carbon that will readilyadhere to the mold in the required quantities to bring about perfectmolded articles, such as glassware and the like.

Another object is to provide a mold coating apparatus. that is simple inconstruction, inexpensive to manufacture and extremely efficient inoperation, use and service.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanyine .rawing andspecifically pointed out in the appended claims.

' In describing the invention in detail, reference will be had to theaccompanying drawing wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure 1 is a vertical sectional view taken through the apparatus whichforms the subiect matter of the present invention, with parts inelevation.

Figure 2 is a sectional view taken approximatery on line 2--2 of Figure1, looking in the direction of the arrows.

Figure 3 is a view partly in section and illustrates one form of theconduit for conveying the carbonized gases or smoke to a mold.

Referring to the drawing in detail, the reference numeral I indicatesthe body of my apparatus, which is shown as being in the form of acylindrical casing, provided with a bottom wall 2, and the upper portionthereof is restricted to provide an annular shoulder 3 that merges intoa relatively small neck 4.

The body is preferably supported bylegs 5 which are secured to anddepend from the bottom wall 2 thereof, as shown in Figure 1 and mountedwithin the body to be elevated above the wall 2, by legs 6 is arelatively flat annular fire pot 'l which has mounted therein andelevated above the bottom thereof, a burner 8, the latter being suppliedwith gas from asultable sourcerof gas supply, by a pipe 9 which extendsthrough the vertical walls of the pot and body or casin as shown.

Superimposed with respect to the gas burner 8 and arranged in closeproximity thereto is the 5 outlet end ll) of a pipe II which has itsoutlet end curved downwardly for directing oil within the flame of thegas burner and the pipe I I likewise extends through the vertical wallof the casing for. disposal in communication with a 10 suitable sourceof oil supply. The outlet end of the oil pipe may have a suitable nozzlethereon, I but in any event the oil is supplied in a manner to drop uponthe burner or within the flame thereof, so that it will be burnt toproduce maximum amount of carbonized gas which rises from the fire potand burner for disposal through the neck, as will be apparent.

The bottom wall 2 is provided with an opening within which is mounted adamper of the rotary type, in that it includes a slotted substantiallyconical wall l2 disposed below the bottom wall 2 and which has rotatablymounted thereon and shaped for fitting the same, a. slotted closuremember l3 for controlling the slots of the wall l2, it being obviousthat the slots of the wall 12 may be completely or partially closed orfully opened by manipulating the closure member l3, and the latter mayhave a handle secured thereto. It will be noted that the conical wall I2is formed on the lower end of the annular wall M of the damper and thewall It is fixed to a collar i5 that is secured about the edge of theopening.

In order'to increase the draft action and to force the carbonized. gasor smoke from the casing, I provide a pipe l6 that extends into thecasing and has an upturned end I! disposed within and concentricallywith respect to the neck 4. The pipe extends through the wall of thecasing as shown, and is-disposed in communication with a suitable sourceof air under pressure.

Secured to the neck 4 is the lower end of a conduit l8, and for thatpurpose I provide a slip joint between the conduit and neck as well as aset screw 19. The conduit l8 in the form shown, 5 is of the goose-neckcurved type and has detachably secured to the upper end thereof a moldreceiving. coupling or nozzle 20. While only one form'of conduit isshown, and I want it understood that the conduits can be of any shapeand 0 length suitable for the purpose, and couplings or nozzles of anysize, may be applied thereto, so as to fit the molds of various sizes aswill be apparent.

It is thought. from the foregoing description ll that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts, provided thatsuch changes fall within the scope of the appended claims.

What I claim is:

1. A mold coating apparatus comprising a substantially cylindricalcasing, a restricted upper portion for the casing, an outlet neck risingfrom said upper portion, gas burner means within the casing, means fordepositing oil on the burner means to be burnt by the flame therefrom toprovide carbonized gas, said oil depositing means having its outletdisposed directly above the burner means, a fire pot having the burnermeans mounted therein and supported above the bottom of the casing,draft means mounted in the bottom of the casing and disposed centrallybelow the fire pot, means for the passage of air under pressure into theneck and cooperating with the draft means to force the carbonized gasthrough the neck, a conduit detachably secured to the neck for conveyingthe carbonized gas from the casing, and a mold coupling detachablysecured to the outer end of the conduit.

2. A mold coating apparatus comprising a substantially cylindricalcasing having a closed bottom provided with an opening centrallyarranged therein, a restricted upper portion for the casing, an outletneck rising from said upper portion, gas burner means within the casing,means for depositing oil in the flame from the burner means to providecarbonized gas and disposed above and centrally of the burner means, asubstantially fiat annular fire pot provided with a closed bottom andhaving the burner means arranged centrally therein, legs supporting thefire pot above the bottom of the casing, adjustable draft means mountedin the opening for disposal centrally below the fire pot, means for thepassage of air under pressure into the neck and cooperating with thedraft means to force the carbonized gas through the neck, a conduitdetachably secured to the neck for conveying the carbonized gas from thecasing, and a mold coupling detachably secured to the upper end of theconduit.

CHARLES E. SMITH.

